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M. A. HARDY. Galvanic Battery,

Patented June 22, I880.

Fly 2 ".PETERS. PHOTO UTHOGRAFHER. WASHINGTON. D c

UNITED STATES ATENT OFF c MARoUs A. HARDY, on NEWPORT, RHODE ISLAND.

GALVANIC BATTERY.

SPEGIEICATION forming part of Letters Patent No. 229,122, dated. June22, 1880,

Application filed June 27, 1879.

To all whom it may concern:

Be it known that I, MARoUs A. HARDY, of the city and county of Newport,and State of Rhode Island, have invented a new and useful Improvement inPortable Galvanic Batteries, which improvement is fully set forth in thefollowing specification, reference being had to the accompanyingdrawings.

My invention consists in a novel construction of battery, whereby Iprovide for emptying all the cells of a, battery simultaneously, savingthe time and labor consumed in handling each cell separately, and makingthe battery easy and safe to transport without spilling the fluid.

My invention also consists in novel features of construction whereby thecleaning of the battery is facilitated, and in a novel method ofsuspending the carbon or other plates of a battery.

In the accompanying drawings, Figure l is a sectional elevation; Fig. 2,a plan view of the same; and Fig. 3 represents a detail view, partly insection and upon a larger scale, showing the manner of securing theplates in place.

A is a tank or reservoir, which is closed airtight by cover B, beingsecured by screws 8 es. On the top of B, and forming part of the same,are two or more square cells, C G, which are connected with reservoir Aunderneath by tubes D D, which lead nearly to the bottom of thereservoir. By removing the screws 8 s the cover B may be freed from thetank or reservoir A and be removed to facilitate the cleaning of thetank or reservoir and removing the salts which may deposit therein.

On the bottom of A is placed a plate, E, on top of which are securedsoft-rubber plugs r 1' central under each tube D, which close the samewhen the plate E is raised. F F are two rods secured to the plate E andto the diaphragms G G, which are secured to the top of cover B, asshown. H is a hole for filling or emptying the reservoir, which isclosed by an ordinary plug or screw-cap. K is a stop-cock secured to thetop of cover B, and L is a rubber tube attached to the same. M is acover which closes the top of the cells 0 O, to the under side of whichare secured zinc plates Z and carbon plates P. N is a glass tube securedto the outside of one of the cells 0, which in-- dicates the height ofthe fluid in the cells. Although the carbon and zinc plates 1?. and Zmaybe secured in any way to the cover M, the method of suspending themhere shown is preferable, as it permits of their ready removal. Thecover M has upon its under side downwardly-extending lugs orprojections. 00 and b designates pins, projecting from their faces andof a size to enter holes in the carbon or zinc plates. 0 designatesblocks of india-rubber, which, after the plates are placed upon saidpins, are forced inward between the lugs or projections to, and therebyhold the plates in place. The downward displacement of the plates isprevented by the pins I), while their lateral displacement is preventedby the blocks 0.

The operation is as follows: Fill the reservoir A with the fluid throughhole H, then close the same and open the stop-cock K and force air intothe reservoir, when the fluid will immediately rise in cells C 0 throughthe tubes 1) D. When the cells are nearly filled, which is indicated bythe height of the fluid in glass tube N, the air-pressure in thereservoir acts on the diaphragms G G, thereby raising the plate E andpressing the soft-rub ber plugs r 1" against the ends of tubes D, thuscutting oft the connection between the fluid in each cell 0 and theremaining fluid in the reservoir A; then close the stop-cock, confiningthe air-pressure in the reservoir, and the battery is ready for use. Onopening the stopcook again the air-pressure escapes, the plate E dropsto the bottom of the reservoir A, and the fluid recedes to the same atonce. The plate E may also be raised by mechanical means instead ofautomatically.

I claim as my invention- 1. The combination, with a battery-cell and areservoir for liquid arranged below the same, of a pipe or pipes foraftbrdin g communication between said cell and reservoir, a platearranged in said reservoir below the end or ends of the pipe or pipes,and diaphragins connected with said plate, whereby an increase ofairpressure within the reservoir will act upon said diaphragms and raisethe said plate soas to close the said pipe or pipes, substantially asspecified.

2. The combination, in a battery, with a tank or reservoir, of aremovable cover therefor, cells arranged above said cover and in com-Inunication with said tank or reservoirf'and means for closing oropening the communication between said tank or reservoir and cells,whereby facility is afforded for removing the cover and cells when it isdesired to clean the tank or reservoir, substantially as specified.

3. The combination of the cover M, provided 10 with thedownwardly-extending lugs or proprojections a, having upon their sidespins 1),

